I have a 1990 Nissan Pao that gives me trouble starting when cold, and stalling when cold. Sounds like a choke issue... It seems like a prior owner replaced the carb with a DCG306, which is apparently a manual choke carb. But there is no way to work the choke, like there is no knob or cable. So finally frustrated with it, I am looking for a new carb. The DCH306 is the automatic choke version, but I am wondering if any one knows of other drop-in replacements. Thanks.